KK

Keiichi Kosuge

WC W.R. Grace & Co.-Conn.: 2 patents #348 of 1,045Top 35%
📍 Biu, NG: #1 of 2 inventorsTop 50%
Overall (All Time): #2,193,142 of 4,157,543Top 55%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
6793441 Tunnel waterproofing method Sachio Shimizu 2004-09-21
6767164 Tunnel waterproofing construction method Sachio Shimizu 2004-07-27